before spring festival,people are busy ( )for it A.prepared B.preparing C.prepare D.to prepare要选哪个为什么

分类: 作业答案 • 2022-07-21 23:08:37

问题描述：

before spring festival,people are busy ( )for it A.prepared B.preparing C.prepare D.to prepare
要选哪个为什么

答

选B
因为有一个结构 be busy (in) doing

答

选B.be busy doing固定搭配

before spring festival,people are busy ( )for it A.prepared B.preparing C.prepare D.to prepare要选哪个 为什么